Prof. Ho has collected stamps for 50 years and is specialized in Imperail Ching stamps, China postal history and postmarks. In the last 20 years, he published many books and over 100 articles,such as his famous book: "The Cross-strait Postal History 1875-2008" etc. He has got degree of Doctor of Law and is a retired professor of Taiwan University. He is now the president of the Taiwan Branch of the China Stamp Soceity,Inc.(CSS) , the president of Chinese Taipei Philatelic Federation,the Juror of CTPF and the chairman of CTPF Academic Committee. He is also the fellow of the Royal Philatelic Society London. He is one of the most respected and famous philatelists in four areas on both sides of the Strait.